Structure and working of the heart along with names of the main blood vessels entering and leaving the heart, the liver and the kidney
The diagram given alongside represents the human heart in one phase of its activity. Study the
same and then answer the questions that follow:
(a) name the phase
(b) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(c) Name the parts numbered 1 to 6
(d) What type of blood flows through the parts marked ‘1’ and ‘2’ respectively?
(e) How many valves are closed in this phase?